Comparison of the three radial profiles of the second moments in υ_R, υ_ϕ, and υ_ɀ (from top to bottom) in the MW stellar disc for the BJ (red) and SH (blue) samples. The dotted lines in the top panel are the exponential profile fit from Eq. (4). The error bars show the bootstrapping error from binning. The black dots show the radial profiles from Fig. 3 from O23, and the olive dashed line shows the exponential profile fit to their points. The difference in υ_ϕ between our results and those from O23 is due to a difference in assumed solar velocity parameters and slight differences in the sample.